World War II submarine warfare

The highly successful U.S. submarine campaign in the Pacific war was waged mainly with the
Gato- and Balao-class submarines. These were approximately 311.5 feet long, displaced 1,525 tons, and had diesel-electric machinery for 20-knot surface and nine-knot underwater speeds. The principal difference between the two designs was the 300-foot operating depth for the
Gato class and 400-foot depth...